imx6ul, u-boot CAAM blob_encap() fails

[angelo_dureghel]

Hi all,

porting some imx6sx crypto-related code to imx6ul, but the blob encapsulation function (blob_encap(), drivers/crypto/fsl/fsl_blob.c) seems not working.

As function parameters, i am passing the buffer with a key to encapsulate, but the blob output buffer remains untouched, all 0. Like the CAAM module is not performing any action. Hope someone can provide some help on this.

Thanks

Regards,

angelo

[angelo_dureghel]

Hi Yuri,

thanks for your support,

i am using U-Boot 2016.03-F1-0.9.2.10032 but patched with more recent enc_blob fixes.

I tried to disable dcache, nothing changed.

      /* Encapsulate it
       */
  rval = blob_encap ( caam_keymod, buf1, buf2, keylen, &caam_bloblen );
  if ( rval )
    goto errexit;

blob encap result (buf2: 8df4c800) :
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

[angelo_dureghel · Accepted solution]

Hi,

thanks anyway, i solved this, issue was due to some customizations done into the caam driver.

[Yuri]

Hello,

  What is U-boot release, used in the case?

Please try to disable caches.

Have a great day,
Yuri

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